fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-02-25 09:20:30 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

draw: Respect pipe_vertex_buffer::max_index in llvm generated code.

Browse source 
Everybody should respect max_index, specially llvm generated code, which
likes to eat vertices 4 at a time, so it may end up chew a bit a bit more
than actually exists.
This commit is contained in:
José Fonseca 2010-04-25 21:43:49 +01:00
parent 2cd128ab44
commit 4dd1a56840
2 changed files with 13 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
src/gallium/auxiliary/draw/draw_llvm.c
View file

@ -286,10 +286,16 @@ generate_fetch(LLVMBuilderRef builder,
LLVMValueRef vbuffer_ptr = LLVMBuildGEP(builder, vbuffers_ptr,
&indices, 1, "");
LLVMValueRef vb_stride = draw_jit_vbuffer_stride(builder, vbuf);
LLVMValueRef vb_max_index = draw_jit_vbuffer_max_index(builder, vbuf);
LLVMValueRef vb_buffer_offset = draw_jit_vbuffer_offset(builder, vbuf);
LLVMValueRef stride = LLVMBuildMul(builder,
vb_stride,
index, "");
LLVMValueRef cond;
LLVMValueRef stride;
cond = LLVMBuildICmp(builder, LLVMIntULE, index, vb_max_index, "");
index = LLVMBuildSelect(builder, cond, index, vb_max_index, "");
stride = LLVMBuildMul(builder, vb_stride, index, "");
vbuffer_ptr = LLVMBuildLoad(builder, vbuffer_ptr, "vbuffer");

5
src/gallium/auxiliary/draw/draw_llvm.h
View file

@ -78,7 +78,10 @@ struct draw_jit_context
#define draw_jit_vbuffer_stride(_builder, _ptr) \
lp_build_struct_get(_builder, _ptr, 0, "stride")
#define draw_jit_vbuffer_offset(_builder, _ptr) \
#define draw_jit_vbuffer_max_index(_builder, _ptr) \
lp_build_struct_get(_builder, _ptr, 1, "max_index")
#define draw_jit_vbuffer_offset(_builder, _ptr) \
lp_build_struct_get(_builder, _ptr, 2, "buffer_offset")